Tester, Cylinder Leakage, Used For Domestic And Import Cars, Material Aluminum, Brass, Common Steel, Rubber Hose, Number of Pieces 4, This Tester Measures The Ability Of An Engine Cylinder To Hold Compressed Air Using Shop Air Pressure And Supplements A Compression Tester, Includes Precision Regulator With A Combination M14 and M18 Adapter On A 26 In Hose Assembly